What number comes next in the series: 8, 19, 41, 85, 173, ?

💡 Solution & Explanation

Each term is the previous term × 2 + 3: 8 × 2 + 3 = 19, 19 × 2 + 3 = 41, 41 × 2 + 3 = 85, 85 × 2 + 3 = 173. So the next term is 173 × 2 + 3 = 349.